package com.cvtt.xmpp.utils;

import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.packet.Presence.Mode;

public final class Status {

	/** Status of a disconnected contact. */
	public static final int CONTACT_STATUS_DISCONNECT = 100;

	/** Status of a unavailable (long away) contact. */
	public static final int CONTACT_STATUS_UNAVAILABLE = 200;

	/** Status of a away contact. */
	public static final int CONTACT_STATUS_AWAY = 300;

	/** Status of a busy contact. */
	public static final int CONTACT_STATUS_BUSY = 400;

	/** Status of a available contact. */
	public static final int CONTACT_STATUS_AVAILABLE = 500;

	/** Status of a available for chat contact. */
	public static final int CONTACT_STATUS_AVAILABLE_FOR_CHAT = 600;

	/**
	 * Default constructor masked.
	 */
	private Status() {
	}

	/**
	 * Get the smack presence mode for a status.
	 * 
	 * @param status
	 *            the status in beem
	 * @return the presence mode to use in presence packet or null if there is no mode to use
	 */
	public static Presence.Mode getPresenceModeFromStatus(final int status) {
		Presence.Mode res;
		switch (status) {
			case CONTACT_STATUS_AVAILABLE:
				res = Presence.Mode.available;
				break;
			case CONTACT_STATUS_AVAILABLE_FOR_CHAT:
				res = Presence.Mode.chat;
				break;
			case CONTACT_STATUS_AWAY:
				res = Presence.Mode.away;
				break;
			case CONTACT_STATUS_BUSY:
				res = Presence.Mode.dnd;
				break;
			case CONTACT_STATUS_UNAVAILABLE:
				res = Presence.Mode.xa;
				break;
			default:
				return null;
		}
		return res;
	}

	/**
	 * Get the status of from a presence packet.
	 * 
	 * @param presence
	 *            the presence containing status
	 * @return an int representing the status
	 */
	public static int getStatusFromPresence(final Presence presence) {
		int res = Status.CONTACT_STATUS_DISCONNECT;
		if (presence.getType().equals(Presence.Type.unavailable)) {
			res = Status.CONTACT_STATUS_DISCONNECT;
		}
		else {
			Mode mode = presence.getMode();
			if (mode == null) {
				res = Status.CONTACT_STATUS_AVAILABLE;
			}
			else {
				switch (mode) {
					case available:
						res = Status.CONTACT_STATUS_AVAILABLE;
						break;
					case away:
						res = Status.CONTACT_STATUS_AWAY;
						break;
					case chat:
						res = Status.CONTACT_STATUS_AVAILABLE_FOR_CHAT;
						break;
					case dnd:
						res = Status.CONTACT_STATUS_BUSY;
						break;
					case xa:
						res = Status.CONTACT_STATUS_UNAVAILABLE;
						break;
					default:
						res = Status.CONTACT_STATUS_DISCONNECT;
						break;
				}
			}
		}
		return res;
	}

	/**
	 * Check if contact is online by his status.
	 * 
	 * @param status
	 *            contact status
	 * @return is online
	 */
	public static boolean statusOnline(final int status) {
		return status != Status.CONTACT_STATUS_DISCONNECT;
	}

}
